Insten Battery for Zune 1G 30GB Microsoft G71C0006Z110 Keeps the music playing on your Microsoft Zune with this replacement battery. Comes with the necessary plastic tools to open up your Zune. No memory effect. This is a rechargeable Li-Ion (Lithium Ion) Polymer battery with premium cell. Compatible With Microsoft: Zune 1st Gen. 30GB. Note: A technician is recommended for installation. Our company is not responsible for any damage caused by installation of this accessory.